我正在构建一个需要在两个独立数据库上进行 CRUD 操作的应用程序。事务应用于一个数据库或另一个(从不同时应用于两者……所以我的理解是不需要 JTA)。我的设置与此处的设置非常接近:Multiple database with Spring+Hibernate+JPA
问题:我的服务器(JBoss AS7)启动良好。应用程序从两个数据源读取数据,比如 DS1 和 DS2,但它只能操作来自 DS1 的数据。我可以看到序列(Oracle 11g)正在更新,但没有表更新。没有抛出错误/异常。 我怀疑我的一位事务管理器没有提交。
以下是使用的技术列表和配置设置...
技术栈
- JBoss AS7
- 甲骨文 11g
- 春天 3.1
- JPA 2
- 休眠 4.1
持久性-ds1.xml
<persistence xmlns="http://java.sun.com/xml/ns/persistence"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/persistence http://java.sun.com/xml/ns/persistence/persistence_2_0.xsd"
version="2.0">
<persistence-unit name="pu1">
<class>com.somepackage.EntityA</class>
<class>com.somepackage.EntityB</class>
<class>com.somepackage.EntityC</class>
<validation-mode>CALLBACK</validation-mode>
<properties>
<property name="hibernate.ejb.naming_strategy" value="org.hibernate.cfg.DefaultNamingStrategy" />
<property name="hibernate.dialect" value="org.hibernate.dialect.Oracle10gDialect" />
<property name="hibernate.hbm2ddl.auto" value="validate" />
</properties>
</persistence-unit>
</persistence>
持久性-ds2.xml
<persistence xmlns="http://java.sun.com/xml/ns/persistence"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/persistence http://java.sun.com/xml/ns/persistence/persistence_2_0.xsd"
version="2.0">
<persistence-unit name="pu2">
<class>com.somepackage.EntityD</class>
<class>com.somepackage.EntityE</class>
<class>com.somepackage.EntityF</class>
<validation-mode>CALLBACK</validation-mode>
<properties>
<property name="hibernate.ejb.naming_strategy" value="org.hibernate.cfg.DefaultNamingStrategy" />
<property name="hibernate.dialect" value="org.hibernate.dialect.Oracle10gDialect" />
<property name="hibernate.hbm2ddl.auto" value="validate" />
</properties>
</persistence-unit>
</persistence>
应用程序上下文.xml
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:jee="http://www.springframework.org/schema/jee"
xmlns:tx="http://www.springframework.org/schema/tx"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx.xsd
http://www.springframework.org/schema/jee
http://www.springframework.org/schema/jee/spring-jee.xsd">
<jee:jndi-lookup id="ds1" jndi-name="java:jboss/datasources/DS1"
expected-type="javax.sql.DataSource" />
<jee:jndi-lookup id="ds2" jndi-name="java:jboss/datasources/DS2"
expected-type="javax.sql.DataSource" />
<bean id="em1" class="org.springframework.orm.jpa.support.SharedEntityManagerBean">
<property name="entityManagerFactory" ref="emf1" />
<property name="persistenceUnitName" value="pu1" />
</bean>
<bean id="em2" class="org.springframework.orm.jpa.support.SharedEntityManagerBean">
<property name="entityManagerFactory" ref="emf2" />
<property name="persistenceUnitName" value="pu2" />
</bean>
<bean id="emf1" class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean">
<property name="persistenceXmlLocation" value="classpath*:META-INF/persistence-ds1.xml"/>
<property name="dataSource" ref="ds1" />
<property name="jpaVendorAdapter">
<bean class="org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter">
<property name="showSql" value="true" />
<property name="databasePlatform" value="org.hibernate.dialect.Oracle10gDialect" />
</bean>
</property>
<property name="jpaDialect">
<bean class="org.springframework.orm.jpa.vendor.HibernateJpaDialect" />
</property>
</bean>
<bean id="emf2" class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean">
<property name="persistenceXmlLocation" value="classpath*:META-INF/persistence-ds2.xml"/>
<property name="dataSource" ref="ds2" />
<property name="jpaVendorAdapter">
<bean class="org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter">
<property name="showSql" value="true" />
<property name="databasePlatform" value="org.hibernate.dialect.Oracle10gDialect" />
</bean>
</property>
<property name="jpaDialect">
<bean class="org.springframework.orm.jpa.vendor.HibernateJpaDialect" />
</property>
</bean>
<tx:annotation-driven transaction-manager="txm1" />
<tx:annotation-driven transaction-manager="txm2" />
<bean id="txm1" class="org.springframework.orm.jpa.JpaTransactionManager">
<qualifier value="txMgr1"/>
<property name="entityManagerFactory" ref="emf1" />
<property name="jpaDialect">
<bean class="org.springframework.orm.jpa.vendor.HibernateJpaDialect" />
</property>
</bean>
<bean id="txm2" class="org.springframework.orm.jpa.JpaTransactionManager">
<qualifier value="txMgr2"/>
<property name="entityManagerFactory" ref="emf2" />
<property name="jpaDialect">
<bean class="org.springframework.orm.jpa.vendor.HibernateJpaDialect" />
</property>
</bean>
</beans>
在我的 DAO 中,我引用了类级别的事务管理器,如下所示。
@Transactional("txm1")
public class DAO1 { ... }
@Transactional("txm2")
public class DAO2 { ... }